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Alarm: Shock and motion sensors linked to a sophisticated microprocessor trigger a 120dB alarm powered by a single CR2 long-life Lithium battery. All electronics are housed in a replaceable alarm module -- no tools required. Self-arming, with no on-off switch, re-sets to armed mode within 15 seconds

Battery died within days
The battery for this alarm died immediately. I got one alarm out of it when I was assembling it, and the battery drained right after. As a Disc Lock it's fine, as an alarm it's rubbish.
February 23, 2015

Won't shut off and doesn't work in rain.
The first sensor triggered whenever a car went down the street - no matter what part of the rotor I installed it on. I called Xena and without hesitation they sent me a new sensor.
During the summer I found that putting it in the topcase made it scream constantly and kill the battery. In the late Fall it wouldn't shut off whenever I installed or removed it. I called Xena customer service and was told it was due to rain on the mirror (opposite the sensor). The customer service rep told me that I should wipe it off before/after locking. He also told me he's send another sensor, but that never happened.
I'm installing a full-featured alarm with remote. Don't want the hassle of a poorly designed and poorly supported paper weight.
Bike: 2013 V-Strom 650 Adventure
January 12, 2015

Support Non-Existent. Poor Construction.
This thing was a terrible waste of money. There is nothing user friendly about this product. The battery is hard to install and it is hard to do the first time without setting off the alarm and blowing up your ears. Some have complained that their alarm is too sensitive, but mine was not sensitive enough. In order to set it off, I have to shake the actual alarm for several seconds. Rocking my bike back and forth does nothing. I tried the front rotor, I tried the back rotor, I tried putting the pin through different holes, I tried adjusting the position of the unit on my rotors, and changing the battery but nothing helped. I finally gave up and emailed Xena for help but they never bothered to respond. Don't give these guys your money. They dont care about you and they certainly don't care about your bike.
November 24, 2014

rotor lock
great price, easy to use, small enough to put in my side pocket. good bright color but paint easy to come off when rubbing on the rotor.
October 30, 2014

Good alarm, triggers easily
As the summary states, the alarm seems to be a fairly high quality alarm for the money. However, it triggers super easily and sometimes seemingly at random, something that can be either a good or a bad thing, depending on how paranoid you are, or how often you want to check on your bike and/or annoy your neighbors.
October 27, 2014

Get a disk lock without the alarm for half of the price
As a disk lock, this seem like a solid product, but you can get a disk lock for a much lower price
As an alarm... it has the following problems:
- it is somewhat difficult to get the key into the lock. 50% of the time you will end up deafened by your own security device.
- goes of randomly ~ 30 s after you armed it. Double dose of deafening sound into your ears
- the small plastic latch that holds the alarm component will break after 2-3 use. Since you have been through so much pain already due to the above 2, you trash the alarm and use it as a disc lock.
- at this point you start thinking about buying a simple disc lock is so much smarter. Do yourself a favor and skip to it now.
October 22, 2014

Really Poor Lock Mechanism
The lock is heavy and seems fairly durable, aside from the alarm system, which is a plastic insert inside the metal body.
On to my major gripe with this product... The lock mechanism is a series of thin plates (many locks have pins) which have a key shaped hole in the middle stacked up in the cylinder (Think cookies in a sleeve with a weird shaped hole in the middle of each one). Each plate hole must be lined up for the key to go all the way to the bottom of the lock to allow it to be opened. Unfortunately, in the process of transporting/manipulating/attaching the lock, these plates will often become misaligned and require some jiggling of the key to get them in line. This would normally not be of much concern, except that jiggling the lock causes the alarm to go off which is annoying/embarrassing depending on circumstances.
The alarm is sensitive enough to go off from just putting the key in, but not sensitive enough to go off if the bike is bumped or even mounted and taken off its side-stand (I tried).
I put some light lubricant into the lock body to allow the key to more easily align the plates but it hasn't helped much. I might end up just removing the alarm mechanism and using it as a regular disc lock.
I might try attaching it with the key fully inserted then carefully removing the key so the plates are aligned when I'm ready to take the lock off. Seems like a hassle though.
As far as the finish/paint, I stored it under my seat (as recommended) for one ride and some paint has chipped off already.
The lock without alarm might be a decent purchase; certainly better than having nothing, but I cant recommend this product, at least until I can reliably get the lock off my disk without setting off the alarm.
October 19, 2014

Annoyance for a piece of mind
I originally bought this for the siren, but to my dismay it either never set itself or it goes off all the time. To work around it, I use it with the battery removed and with the cable attachment.
October 18, 2014

Have a functionality, fit, or otherwise product-specific question about the Xena XX-6 Disc Lock with Alarm? Ask it here!
If you have a customer service or shipping question, please direct it to our Customer Service department.

Brian R: This alarm fits my bike and does exactly what I need it to do, deter theft. It's very loud, and easy to put on. I sometimes have trouble getting it unlocked so the alarm has gone off on me a few times which is embarrassing, but I have had no problems with false alarms. I set it on my front caliper at about 1 o'clock and it seems to work great.Mar 18, 2015

wilian r: i choose this xena XX-6 so that i could have some peace of mind that my bike will be there when i get back, but this is obviously not full proof because a bike can easily be picked up.Feb 25, 2015

Dennis B: I choose the Xena XX-6 Disc lock after researching lots and lots of reviews of disc lock and found this one to be the best.Dec 1, 2014

Daniel C: You can never have enough security on the road for a super touring bike. Went with this one on recommendation from one of Revzilla's gear guys. Works like a charm.Sep 23, 2014

Alex S: I chose this because it can fit thru the rear rotor vent hole. It looks awesome and indestructible. I plan on complimenting it with the XX14 for the front rotor soon to replace the Kryptonite I already have. These are the "Nth" layer to my bike security.Sep 15, 2014

Eleazar H: I choose this because I want to feel safer whenever my bike is parked on the street.Sep 7, 2014

Rhett V: I chose this because I do not have a garage to lock my dr650se in. I also commute to areas in Honolulu where motorcycle theft is very common. This lock is extremely solid and the alarm feature adds a to the security of your bike.Dec 1, 2013

Jose R: good product and best price. it was recommended by a friend.Sep 19, 2013

Michael G: Best alarm-lock made that will fit on my rear disk, in my opinion. Would have loved to use the XX-14, but that model with the larger bolt will not go through the vent holes in my rear disk. I think it's most important to have the alarm on the rear, where it's harder to defeat. I use a conventional (non-alarmed) lock on the front. Got this one in the bright yellow color.Aug 27, 2013

Adam F: It had awesome reviews and I needed it for where I worked in a downtown area.Aug 23, 2013

Timothy D: It was the best option for theft/vandalism deterrent.Aug 19, 2013

Randolph B: First try at a disk lock with alarm. Your video reviews very helpful. I think with the alarm it will keep me from trying to drive off without taking off lock first (like I did with other non-alarm models).Aug 19, 2013

Sundance99:thought this is a good question since I only just got my lock. set the lock on my bike and had a noisy hog gun it. set off the neighbors car alarm but not the bikes. aimed the pipe right at it and it didn't react till the almost touching the lock. do not bump the bike or jiggle the stearing it or the alarm will go off. I 'm now deaf so no more Mr. Experiment today.Jul 18, 2012

Jduh:Nope, I live close to a highway and to vibrations did it yet. Also, I park it kind of close to the garbage bins, and it never went off when the garbage truck came. There is also a bump a few feet away from where I park my bike, and many cars "jump" over it, and that didn't set it off either.Jul 29, 2011

Chris K:I have a Xena system on my bike and it has not gone off unless the bike was actually moved. There is a combination of vibration sensors and a gyroscope that determine the alarm function, so it usually is pretty foolproof.Apr 28, 2011

justin s:I had to throw this out after having it for about three months. Apparently ants like to get inside and nest. Once they took hold of it the unit would randomly go off and eventually stopped working all together. I would not order it again. Mar 29, 2014

A shopper asked:I noticed while testing this product moving it around about my house the alarm will sound whether locked or unlocked. How do you ride with this in a backpack or something similar without the alarm sounding? i can't seem to find a way to achieve walking around with it without the alarm going off. thanksMay 1, 2014

Evrol P:The alarm is activated once you press down the cylinder which is also the key hole. You can turn and lock the device without pushing the cylinder down while its in your back pack I do it all the time. The only time it needs to be down is when in use. If your device is still sounding an alarm with the key hole cylinder in the raised position then you have a defective device and should seek out warranty services.May 2, 2014

Darrick V:Locking\unlocking it has nothing to do with enabling\disabling the alarm. The alarm is simply enable with something metal in it. Either a disc brake from your moto or a reminder cable while in the bag. Just make sure the is nothing inbetween the lock while carrying it in your bag.May 6, 2014

Louis-Daniel B: After locking it should give a short beep indicating it is armed. While locked , little motion will trigger the alarm. Unlocking it typically means deactivating the alarm. Try locking then unlocking, maybe this will reset it. Good luckMay 1, 2014

Bart S:I only have this issue when I attach the alarm to my bike seat while reading but not when I carry the alarm in my pocket. It is sensitive to motion though and the alarm should not go off when unlocked.May 1, 2014

Ashton E:Hi Hao, forgive me, I have an '08 Yam Fazer 1000 with stock discs and I thought the vent holes on Japs if not most modern bikes would be standard. I bought it without worry of that since the Xena specs on their site didn't mention any make or model that you had to specify before purchasing. That being said, I believe you're pretty safe in getting the XX-6. I got the silver and wished I got the yellow just to give it that extra deterrence. Its very loud and the sensitivity is good enough to not go off unless the bike is intentionally shaken or moved. Passing vehicles on the road shouldn't set it off but if it does, it is not going to stay on forever. A great security buy. I also fitted a Spy 5000 remote start alarm with motion sensor but I use the Xena more. It just might be all you need.Sep 19, 2013

Dennis N:I wish I knew. I ride a 2009 BMW K1300S and the locking pin on the XX6 fits perfectly through the vent holes on my bike. By the way, the lock is great! It is highly visible which deters would-be thieves, it is easy to use, and definite triggers an ear-piercing sound when activated.Sep 18, 2013

A shopper asked:I have this and have been using it for about 10months. Seems the battery is starting to die, what is the process for replacing the battery and can I order it from Revzilla? Is it a specialty battery?Feb 10, 2014

Patrick K:The type of battery you need is a CR2 3v Lithium Battery type, so you can purchase at almost any local store. Installation is easy but I recommend using earplugs when changing the battery. You can also find the manual for Xena XX-6 online. Google: Xena XX-6 manual

A shopper asked:Hello! I am trying to see which one of these Xena locks would fit my bike. it's a SYM Wolf Classic 150 - a small 150 cc bike, front brake is 240mm, rear 130mm. Any ideas on which Xena lock would fit best?Thank you,fJul 8, 2012

Sundance99:Go to the Xena website you can print off a template that has all the thickness of the lock throats and their depth along with the pin size. just cut it out and slap it on on the disc brake it tells you which locks will fit.Jul 18, 2012

RevZilla:You will need to measure the distance from the outside diameter of the brake disc to the inner diameter of brake disc. Once you have that measurement you will be able to verify it to the lock you are interested in. The lockS we offer usually are accompanied with a schematic showing the distance between the locking pin and inside of the lock that goes over the disc. For example, the Xena XX-6 will fit over a disc brake that is not more than 42 mm (outer to inner diameters).Jul 18, 2012

Mathew B:Measure the diameter of the holes in the brake rotor and the width of the rotor itself. Then compare these to the dimensions of the lock. They come in a few different sizes and one should fit your application.Dec 3, 2014